Spot-setting machine.



G. NISKANEN. SPOT SETTING MACHINE.

APPLICATION FILED MAY l, 1913.

Patented June 16,1914.

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c. NISKANEN.

SPOT SETTING MACHINE. APLIUATION FILED M1111, 191s.

Patentea'Jun'e 16,1914

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C. NISKANEN. SPOT SETTING MACHINE. APPLIOATION FILED MAY 1, 1913.

l Il NDGRAPH Co., WASHINGTON, DA c.

CDLUMBxA PLA CARL NISKANEN, OF MILWAUKEE, WISCONSIN.

SPOT-SETTING- MACHINE. Y

Specification of Letters Patent.

Application filed May 1, 1913.

Patented June 16, 1914. Serial N0. 764,748.

To all fte/tom t may concern.'

Be it known that I, CARL NIsKANnN, a subject of the Empire of Russia, residing at 'iilwaukee, in the county of Milwaukee and State of ll/visconsin, have invented certain new and useful Improvements in Spot-Setting Machines, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof.

The main objects of this invention are to facilitate inserting and clenching in harness or the like, ornamental staples struck from she-et metal such as brass, with prongs and round or oval inverted cup-shaped heads and called spots to make a machine for this purpose readily adaptable for setting large or small and round or oval headed spots; and generally to improve the construction and operation of machines of this class.

T he invention consists in the peculiar construction, arrangement and combination of parts as hereinafter particularly described and pointed out in the claims.

In the accompanying drawing like characters designate the same parts in the several figures.

Figure 1 is a front elevation of a machine embodying the invention; Fig. 2 is a side elevation of the machine as seen from the right relative to Fig. 1; Fig. 3 is an enlarged vertical axial section on the line SW3, Figs. 1 and 9, of one form of feed drum and associated parts for large size round and oval headed spots, the rotary gate ring and the stationary guide ring being shown partly in side elevation; Fig. 4 is a vertical cross section of the drum and guide ring, the right hand portion of the figure showing the drum in section and the gate ring in elevation, and the left hand portion of the figure showing the guide ring partly in section and partly in elevation on the line M, Fig. 3; Figs. and G are cross sectio-ns of the guide ring on the lines and 6 6 respectively, Figs. 3 and 4; Fig. 7 is an enlarged side elevation of a modiiied form of feed drum and associated parts for small size, round headed spots, certain parts being broken away and shown in vertical section; Fig. S is a front view partly in elevation and partly in vertical cross section, on the line 8-8, Fig. 7 5 and Figs. 9, 10 and 11 are cross sections on the lines 9 9, 10-10, and 11-11 respectively, Fig. 8. l

The machine comprises generally, setting mechanism for inserting and clenching the spots in leather or other material to which they are to be attached, and feeding mechanism for delivering the spots one at a time in proper position to the setting mechanism.

The setting mechanism, which may be of any suitable construction for the purpose, as shown in Figs. l and 2, comprises a die 1, for clenching the prongs o-f the spots removably fastened by a set screw 2, in a vertical socket in the base or lower part of the frame 3; a reciprocatory plunger 4, mounted in a vertical sleeve or guide 5 on an overhanging arm of the frame 3 in alinement with the die 1, and suitable means for operating the plunger. In the present case, a lever 6, fulcrumed at 7 on the frame 3, and pivotally connected with the upper end ofthe plunger, is shown for actuating the setting mechanism. This lever may be operated by any suitable means, such as a treadle or power connection, and returned to and held in its normal position by a spring, such operating means and spring' being of any ordinary well known construction, and therefore not shown.

The machine is provided with interchangeable punches (not shown) of different sizes shaped to fit the heads of the various sizes and shapes of spots to be set, and detachably secured to the lower end of the plunger 4 by a pin 9. An internally recessed sleeve 18 inclosing the punch, is slidably mounted thereon and on the lower part of the plunger, and is held against turning by the pin 9, which projects at its ends into slots 14 in opposite sides of the sleeve.

The sleeve is formed on one side, as shown in Fig. 2, with an opening 15, corresponding in size and shape with the spots to be set, and is cut away or recessed on the outer side at 16 next to and above the opening 15, as shown in Fig. 1, to clear the lower end of a guideway o-r conduit 17, which leads downwardly from the feed drum hereinafter described, and is adapted to conduct the spots in a single row and in proper position for delivery to the setting mechanism.

At its upper end the movable sleeve 13 is provided with studs 19, which are connected by light retracting springs 20 with studs 21 on the stationary guiding sleevev 5. These springs withdraw the sleeve 13 after each downward movement thereof with the plunger 4 and punch and hold it normally in its upper position, as shown in Figs. 1 and 2,

against the sleeve 5, with the opening 15 in register with the lower end of the conduit 17. A spiral spring 22, of greater tension than the two springs is inserted in the internal recess-of the sleeve 13 around the punch and when the plunger descends is engaged by the pin 9 and forced downwardlywith it against the work resting on the die 1. A light loop spring 23, inserted in transverse slots on opposite sides of the sleeve 13 and normally projecting slightly intoV the bore of the sleeve below the upper part of the opening 15 serves as a yielding support for the spots as they are fed one by one from the conduit 17 into said sleeve.

The frame 3 is provided behind the sleeve or guide 5, with an adjustable stop screw 25, as shown in Fig. 2, for limiting the downward movement of the punch according to the thickness of the material in which the spots are to be set. It is also provided behind the die 1, with an adjustable gage 26, for determining the position of the work on said die.

The feeding mechanism by which the spots are delivered in proper position into the guideway or conduit 17, comprises a rotary drum closed at one end and open at the other, and provided next to its open end with an internal gate ring or barrier formed in the outer side next to the peripheral or cylindrical wall of the drum with spot colleeting and guiding passages which are disposed ololiquely to the axis of the drum, and

i a stationary plate or closure provided next to the outer side of the gate ring with a guide ring formed in one side with a spot guiding passage having a lateral downwardly inclined offset with which the lower ends of the passages in the gate ring register one at a time on the ascending side of the drum. For feeding large size round or oval headed spots, which tend when dropped or agitated, to rest on their heads with their prongs projecting upwardly, the machine is provided with mechanism like that shown in Figs. 3, 4, 5 and 6.

- r1`he drum, which is of cylindrical form, is removably mounted on the front end of a horizontal shaft 28 having bearings 29 and 30 at the top of the frame 3, and the drum is formed with a long hub which is clamped on the shaft 28 between a shoulder o-r collar 31 with which the shaft is formed or provided, and a nut 32 threaded on the end of the shaft. The gate ring or barrier 33, which is fitted and secured in the drum next to its open end, is formed in the outer side with T-shaped passages 34, which are disposed obliquely to the axis of the drum and the middle branches of which are in this case directed `toward the center or axis of the drum.

The stationary end plate 35 which forms a closure vfor` theopen end of the drum, is

provided next to the outer side of the gatel ring with a guide ring 36 of corresponding diameter. rlhis guide ring, which for convenience in construction is composed of two parts or sections, is formed in one side with a T-shaped passage 37 corresponding, like the passages 34 in the gate ring, in shape and size with the heads and prongs of the spots to be set. Between its upper and lower ends at one side of the ring, the passage 37 has a downwardly inclined lateral offset 38, with the upper end of which the lower ends of the passages 34 in the gate ring register one after another on the ascending side of the drum, as shown in Fig. 3. The stem or middle branch of the passage 37 like the stems or middle branches of the passages 34 in the gate ring, is directed toward the center or axis of the drum. Above the olfset 3S the passage 37 is partially extended, its stem or middle branch being open on the side of the ring 36 next to the ring 33, and at its upper end it opens into the drum. The ring 36 is cut away on the inner side, as shown at 39, Fig. 3, to permit surplus spots carried by the ring 33 to fall back into the drum when the conduit 17 and the passage 37 are filled. The plate 35 is formed on the outer side with a central hub 40, through which the shaft 28 passes and which is removably iitted and secured by a set screw 41 in the bearing 29, as shown in Figs. 2 and 3. An opening 42, for the introduction of spots into the drum is formed in the upper part of the plate 35, and a hopper 43 is attached to the outer side of the plate adjacent to the opening. A downwardly inclined chute 44 attached to the inner side of the plate 35 below the opening` 42 is adapted to deliver the spots in the lower part of the drum between its closed end and the gate ring 33. To carry the weight of a mass of spots with which the drum may be supplied and permit the spots on the under side of the drum to free/ty arrange themselves upon their heads ,and move into the passages 34 of the rotary gate ring 33 by which they are picked 11p and delivered into the passage 37 of the stationary guide ring 36, a cylindrical shield 45 is attached to the inner side of the ring 33 and extends therefrom to within a short distance of the closed end of the drum.

The machine may be provided with any suitable means for intermittently or slowly turning the feed drum 27. i pose a double pawl and ratchet connection is shown in Figs. 1 and 2. A ratchet wheel 46 is fixed on the rear end of the shaft 28, and two vibratory arms or pawl carriers 47 loosely mounted on said shaft are connected by links with a rearwardly projecting arm of the lever 6. The arms or pawl carriers 47 are provided with spring actuated dogs or pawls 48, adapted to work with the teeth of the ratchet, wheel, the arms or pawl car- For this pur- .i

riers being so arranged and connected with the lever 6 that with each reciprocation of the lever the upward movement of one dog will turn the ratchet wheel an interval, while the downward movement of the other dog will turn it a corresponding interval in the same direction, indicated by arrows on Figs. 1 and 4. The longitudinally slotted guideway or conduit 17 is detachably connected at its upper end with the stationary guide ring 36, at the lower end of the passage 37 of which it constitutes a downward continuation. For feeding small size round headed spots which have comparatively large and heavy prongs and which when dropped or agitated naturally rest on their sides, a feed drum and a guide ring of a modified construction like those shown in Figs. 7 to 11 inclusive, are substituted for the drum and guide ring shown in Figs. 3 to 6 inclusive. For spots ofdifi'erent sizes and shapes, different dies, punches, sleeves and conduits, are provided, the parts or groups of parts for spots of different sizes and shapes being interchangeable, and the change from one kind of parts to another being readily effected in the machine, as hereinbefore indicated. For feeding small round headed spots, a drum 27 and a guide ring'36 like those shown in Figs. 7 to 11 inclusive, are used. The drum 27 is formed in its peripheral or cylindrical wall with slots 49, disposed obliquely to the axis of the drum, and of a width slightly greater than that of the prongs of the spots. Next to its open end the drum is provided with an internal gate ring or barrier 33, formed in its outer side with oblique passages 34 corresponding in size and shape with the heads of the spots and located and inclined to correspond with the slots 49 with which they coperate. The guide ring 36, made for convenience like the ring 36, in two parts or sections, is formed in one side with a T-shaped passage 37 having a downwardly inclined lateral offset 38 similar to that of the ring Unlike the passage 37 in the ring 36, the passage 37 of the ring 36 has its middle branch for the prongs of the spots directed outwardly7 instead of inwardly. With this drum the shield 45 is unnecessary and is therefore omitted.

In setting large round or oval headed spots, the machine operates as follows: The drum 27 being supplied with a quantity of spots and turned by hand or otherwise till the conduit 17 is filled or partially filled, the strap or other article in which the spots are to be set is placed by the aid of the gage 26 in proper position on the die 1. The lever 6 is then rocked by the operator or under his control, to advance and withdraw the plunger 4. The spots in the descending conduit 17 being fed by gravity to the setting mechanism, the lowermost spot is pushed by those above it through the side opening 15 into place in the bore of sleeve 13 below the punch. As the punch descends, the pin 9 by engagement with the upper end of the spring 22, forces the sleeve 13 downward against the work on the die 1, the punch engaging with the head of the spot within the sleeve and holding it seated in place on the spring 23, while the opening 15 passes below and out of register with the lower end or' the conduit 17. The side of the sleeve above the opening 15 engaging with the head of the next spot in the conduit 17, holds back the spots contained in the conduit while the spot within the sleeve is advanced and set and until the sleeve is withdrawn to its original position to receive another' spot. After the lower end of the sleeve 13 is seated on the work, the punch advancing inde pendently thereof, forces the head of the spot over the spring 23, which yields out wardly, permitting it to pass, and finally thrusts the prongs of the spot through the strap or other article against the die 1, which clenches them. ldlhen the punch is retracted, the sleeve 13 is held against the work, by the spring 22, until the pin 9 clears the upper end of said spring, whereupon the springs 20 withdraw the sleeve to its initial position in engagement with the sleeve or guide 5, bringing the opening 15 again into register with the delivery end of the conduit 17 as shown in Fig. 2. All the parts having been thus returned to normal position as shown in Figs. 1 and 2, another spot is fed by gravity from the conduit 17 through the opening 15, into the sleeve 1?, and the operations above described are repeated. 1With the reciprocation of the lever 6, the feed drum 27 is intermittently turned in the direction indicated by arrows on Figs. 1 and 4, by the pawl and ratchet wheel connection hereinbefore described between said lever and the shaft E28. As the gate ring 33 is turned with the drum, the spots resting with their heads downward on the under side of the drum, as indicated in Fig. 3, are gradually crowded by those above them in the space between the closed end of the drum and the adjacent end of the shield 45, into the passages 34 in said ring, by which they are carried up on the ascending side of the drum. As these passages assume a downwardly inclined position on the ascending side of the drum, as shown in Fig. 3, the spots slide down against the gate ring S6 and are moved upwardly with their lower prongs in contact therewith until said passages are brought int-o register at their lower ends with the upper end of the offset 38 in the passage 37, whereupon the spots slide down by gravity into said passage and are conducted thereby into the upper end of the conduit 17, as indicated in Fig. The conduit is thus `kept suppliedu with spo-ts which are fed by gravity from the lower end thereof one after another into the sleeve 13 in proper position to be set by the punch, cooperating with the die 1, as hereinbefore explained. In case the conduit 17 and passage 37 are filled, and spots are not used as fast as they are supplied by the rotary gate ring 83, the spots taken up by the gate ring, after the open portion of the passage above the offset is filled, will be discharged back into the drum through the open space 39 at the upper end of said passage.

The operation of the machine equipped with a drum and guide ring like that shown in Figs. 7 to 11 inclusive for setting small round headed spots, is substantially the same, except that the spots are caught by their prongs in the oblique slots 49 in the lower part of the drum and are guided therein and through the oblique passages 34 in the gate ring 33 into the passage 37 of the stationary guide ring 31, with the prongs directed outwardly inst-cad of inwardly as in the other case, and must be given a half turn in their passage through the conduit 17, or delivered to the opposite side of the sleeve 13 from the large spots whose prongs are directed inwardly toward the center of the drum when they enter the guide ring at the upper end of the conduit.

Various modifications in the details of construct-ion and arrangement of parts may be made without materially aiecting the mode of operation of the machine and without departing from the principle of the in` vention as delined in the following claims.

I claim:

1. In a spot setting machine the combination of a feed drum mounted to rotate on a substantially horizontal axis and having an inwardly projecting barrier formed with spot-'guiding passages extending through it next to the peripheral wall of the drum obliquely to its axis, and a guideway with which said passages register one after another at their lower ends on the ascending side of the drum.

2. In a spotsetting machine the combinaf tion of a rotary feed drum open at one end and having next to its open end an internal gate ring formed in its periphery next to the wall of the drum with spotguiding passages disposed obliquely to its axis, a stationary closure for the open end of said drum and a guideway which leads down- 'wardly from said drum and with the upper end of which said guiding passages register one after another at their lower ends on the ascending side of the drum.

3. In a spot setting machine the combination of a horizontally mounted rotary feed drum open at one end and having next to its open end an internal gate ring ijormed in its periphery next to the wall ofthe drum with spot-guiding passages disposed obliquely to its axis, a stationary guide ring mounted next. to said gate ring and formed with a spotguiding passage having a downwardly inclined offset with which the passages in the gate ring register one after another at their lower ends on the ascending side of the drum, and a guideway leading downwardly from said guide ring and forming a continuation of the passage therein.

4l. In a spot setting machine the combination of a horizontally mounted rotary feed drum open at one end and having next to its open end an internal gate ring formed with spot guiding passages disposed obliquely to the axis of the drum, a stationary closure for the open end of the drum provided on the outside with a hopper and below it on the inside with a chute and having next to the rotary gate ring a stationary guide ring formed with a spot-guiding passage opening at its upper end into the drum and having a downwardly inclined offset with lthe upper end of which the passages in the gate ring register one after another at their lower ends on the ascending side of the drum, and a guideway leading downwardly from the lower end of the passage in the guide ring and forming a. continuation thereof.

5. In a spot setting machine the combination of a horizontally mounted rotary feed drum having a closed and an open end and at its open end an internal gate ring formed next to the periphery of the drum with spotguiding passages arranged obliquely to the axis of the drum, a stationary guide ring located next to the outer side of the gate ring and formed with a T-shaped spot-guiding passage having a downwardly inclined offset with the upper end of which the passages in the gate ring register one at a time at their lower ends on the ascending side of the drum, the passage in the guide ring being open above the offset on the side next to the gate ring and opening at its upper end into the drum, and a guideway leading from the lower end of said passage downwardly.

6. In a spot setting machine the combination of a horizontally mounted rotary feed drum open at one end and closed at the other and provided next to its open end with an internal gate ring having T-shaped spotguiding passages next to the peripheral wall of the drum and arranged obliquely to its axis with their middle branches directed toward the axis of the drum, a stationary guide ring located next to the outer side of the gate ring and formed with a T shaped passage having a lateral downwardly inclined offset with the upper end of which the passages in the gate ring are adapted to register one at a time at their lower ends on the ascending side of the drum, a portion of said passage being continued above the offset and opening at its upper end into the drum, and a guideway leading from the lower end of said passage.

7. In a spot setting machine the combination of a horizontally mounted rotary feed drum having an open end and next to its open end an internal gate ring formed next to the peripheral wall of the drum with spot-guiding passages disposed obliquely to the axis of the drum, a cylindrical shield attached to said ring and Jrojecting therefrom toward the opposite end of the drum, a stationary closure plate provided on the outside with a hopper opening into the drum and below the hopper on the inside with a chute terminating at its lower end within the shield, a guide ring attached to said plate next to the outer side of said gate ring and formed with a spot-guiding passage having a downwardly inclined lateral offset with the upper end of which the lower ends of the passages in the gate ring are adapted to register one after another on the ascending side of the drum, and a guideway leading from the lower end of said passage.

8. In a spot setting machine the combination of a horizontal shaft, a rotary feed drum removably mounted on said shaft and having at one end an inwardly projecting barrier formed neXt to the wall of the drum with a peripheral series of spot collecting and guiding passages disposed obliquely to the axis of the drum, and a removable guide ring stationarily mounted next to said barrier at the end of the drum and formed with a passage having a downwardly inclined lateral otlset with the upper end of which the passages of the drum are adapted to register one at a time at their lower ends on the ascending side of the drum.

In witness whereof I hereto aiX my signature in presence of two witnesses.

CARL NISKANEN.

Witnesses:

GHAs. L. Goss, JOHN WM. SAARI.

copies of this patent may be obtained for ve cents each, by addressing the Commissioner o! Patents,

Washington, D. G. 

